This chapter is from the book
This chapter is from the book
This chapter is from the book
This chapter is from the book
Prevent Inheritance
| Scenario/Problem: |
You want to prevent users of your class from inheriting from it. |
| Solution: |
Mark the class as sealed. sealed class MyClass
{
...
} |
Structs are inherently sealed.
Prevent Overriding of a Single Method
| Scenario/Problem: |
You don’t want to ban inheritance on your type, but you do want to prevent certain methods or properties from being overridden. |
| Solution: |
Put sealed as part of the method or property definition. |
class ParentClass
{
public virtual void MyFunc() { }
}
class ChildClass : ParentClass
{
//seal base class function into this class
public sealed override void MyFunc() { }
}
class GrandChildClass : ChildClass
{
//yields compile error
public override void MyFunc() { }
}